Henry Savile's Tacitus and the English role on the Continent: Leicester,Hotman, Lipsius

This article argues that Henry Savile's widely admired Tacitus of 1591 should not be read as an implied call for a more aggressive English stance against Spanish advances on the Continent (as one recent article suggests), but precisely for a more restrained and prudential approach. Secondly, it calls into question the generally accepted view that Robert Devereux, Earl of Essex, played a prominent role in the composition of the book. It argues that in reconstructing the work's original intellectual context and especially that of the supplement The Ende of Nero and the beginning of Galba, the main emphasis should not be on Essex's political and military career, but on that of his stepfather Robert Dudley, Earl of Leicester. The article provides an investigation (as far as the surviving information allows) of the background in Continental politics and political thought in relation to the text of The Ende, which suggests that it should primarily be read from the perspective of the unsuccessful English intervention in the Low Countries in 1585–88.     

Computing the Jacobian in Gaussian Spatial Autoregressive Models: An Illustrated Comparison of Available Methods

When estimating spatial regression models by maximum likelihood using spatial weights matrices to represent spatial processes, computing the Jacobian, ln(|I ? λW|), remains a central problem. In principle, and for smaller data sets, the use of the eigenvalues of the spatial weights matrix provides a very rapid resolution. Analytical eigenvalues are available for large regular grids. For larger problems not on regular grids, including those induced in spatial panel and dyadic (network) problems, solving the eigenproblem may not be feasible, and a number of alternatives have been proposed. This article surveys selected alternatives, and comments on their relative usefulness, covering sparse Cholesky and sparse LU factorizations, and approximations such as Monte Carlo, Chebyshev, and using lower‐order moments with interpolation. The results are presented in terms of component‐wise differences between sets of Jacobians for selected data sets. In conclusion, recommendations are made for a number of analytical settings. Al estimar modelos de regresión espacial con el método del máxima verosimilitud (máximum likelihood) y usando matrices de pesos espaciales para representar procesos espaciales, cálculo del término jacobiano (jabobian)—ln(| I ?λ W |)‐ sigue siendo un problema central. En principio, y para bases de datos más pequeñas, el uso de los valores propios (eigenvalues) de la matriz de pesos espaciales proporciona una solución muy rápida. Los eigenvalues analíticos para retículas o grillas grandes y regulares son ya conocidos. Para problemas más grandes, que no se presentan en mallas regulares ‐incluyendo aquellos que se inducen en problemas de paneles espaciales y en problemas de (redes) diádicas‐, es posible que resolver el eigenproblem no sea posible. Este artículo estudia una selección de alternativas y comenta acerca de su relativa utilidad. Se cubren las facorizaciones de tipo Cholesky disperso (sparse Cholesky) y de tipo LU dispersas (sparse LU), las aproximaciones Monte Carlo, y Chebyshev, así mismo se utiliza momentos de bajo‐orden (lower‐order) con interpolación. Los resultados se presentan en términos de diferencias de componentes entre sets de términos jacobianos para bases de datos seleccionadas. En conclusión, se hacen recomendaciones para una serie de contextos analíticos. 当采用表征空间过程的空间权重矩阵对空间回归模型进行最大似然估计时,雅可比矩阵ln(|I?λW|)的计算仍是核心问题。对于小数据集,原则上可利用空间权重矩阵的特征值提供一种快速的解决方案,对于大型规则格网数据特征值分析同样有效。但对于不规则格网大型问题,包括从空间面板和二元（网络）问题中引伸的问题,利用特征值的解决方案可能不适用,对此学术界提出了多种可选替代方案。本文选取已有的几种替代方案并评论各自的相对有效性,其中包括稀疏Cholesky分解和稀疏LU分解法,Monte Carlo和 Chebyshev近似模拟法以及低阶矩插值法。结果以所选数据集雅可比矩阵间特定组份的差异方式显示。最后,推荐了一些分析设定。     

Early medieval T⊘nsberg — dating problems and the results

According to the 13th century Icelandic Saga writer Snorre Sturlasson, there was a marketplace (in old Norwegian: Kaupstadir) in the T?nsberg area by the end of the 9th century. The origin of the medieval town of T?nsberg has therefore been much discussed in the light of this statement. Viking Age and early medieval settlements often lack material datable by archaeology alone. In T?nsberg radiocarbon dating has been used to distinguish between Viking Age deposits and medieval deposits, when stratigraphy alone does not state the differences. However, this dating method has produced various results and there is obvious need for a local calibration.     

A practical and statistical approach to some flake measuring problems

In this article, the hypotheses put forward in ‘A Theoretical Approach’ in Volume 1 of this Journal are tested. An account is first given of the additional settlements and hoards which were treated in the computer. The combined material consists of 17 units. The material is then evaluated and handled in a number of experiments in which various methods of arriving at special tendencies in the material are considered. Finally the various methods selected are discussed and the results summarised.     

Researching and Writing in the Twilight of an Imagined Conquest: Anthropology in Northern Rhodesia 1930–1960

The rich corpus of material produced by the anthropologists of the Rhodes Livingstone Institute (RLI) has come to dominate our understanding of Zambian societies and Zambia's past. The RLI was primarily concerned with the socio‐cultural effects of migrant labour. The paper argues that the anthropologists of the RLI worked from within a paradigm that was dominated by the experience of colonial conquest in South Africa. RLI anthropologists transferred their understanding of colonial conquest in South Africa to the Northern Rhodesian situation, without ever truly analysing the manner in which colonial rule had come to be established in Northern Rhodesia. As such the RLI anthropologists operated within a flawed understanding of the past. The paper argues that a historical paradigm of colonial conquest that was applicable to the South African situation came to be unquestioningly applied by anthropologists to the Northern Rhodesian situation, and discusses what the consequences of this paradigm are for our understanding of Zambian history.     

Accurate sex identification of ancient human remains using DNA shotgun sequencing

Accurate identification of the biological sex of ancient remains is vital for critically testing hypotheses about social structure in prehistoric societies. However, morphological methods are imprecise for juvenile individuals and fragmentary remains, and molecular methods that rely on particular sex-specific marker loci such as the amelogenin gene suffer from allelic dropout and sensitivity to modern contamination. Analyzing shotgun sequencing data from 14 present-day humans of known biological sex and 16 ancient individuals from a time span of 100 to ∼70,000 years ago, we show that even relatively sparse shotgun sequencing (about 100,000 human sequences) can be used to reliably identify chromosomal sex simply by considering the ratio of sequences aligning to the X and Y chromosomes, and highlight two examples where the genetic assignments indicate morphological misassignment. Furthermore, we show that accurate sex identification of highly degraded remains can be performed in the presence of substantial amounts of present-day contamination by utilizing the signature of cytosine deamination, a characteristic feature of ancient DNA.     

Redescription of Parexus recurvus,an Early Devonian acanthodian from the Midland Valley of Scotland

Parexus Agassiz was one of the first Early Devonian ‘spiny sharks’ to be described. The genus is readily recognized by the large size and ornament of its anterior dorsal fin spine. Although two species were erected, reappraisal of all known specimens indicate they should be synonymized in the type species Parexus recurvus. Farnellia tuberculata Traquair, originally described as a vertebral column, is actually tooth rows of jaw dentition, and is also now considered to be a junior synonym of P. recurvus. Parexus has a perichondrally ossified scapulocoracoid of typical acanthodian shape, and diagnostic features of the family Climatiidae, but has distinctive scales comprising appositional growth zones that closely resemble those of the putative stem chondrichthyan Seretolepis elegans Karatajute-Talimaa.     

Archeology in Conflict and UNESCO: Legal Aspects

This article analyzes the obligations under the 1954 Convention for the Protection of Cultural Property in the Event of Armed Conflict and its two Protocols related to the protection of cultural property in occupied territory. It goes on to provide practical examples of the return of cultural property from Iraq to Kuwait following the entry of Iraqi military forces into Kuwait in August 1990 and the legal framework of the return of Iraqi cultural property under operative paragraph 7 of the United Nations Security Council resolution 1483, adopted on 22 May 2003.